National Development and Reform Commission publicity! Polylactic acid heating composite fiber to be included in the "Green Technology Promotion Catalog (2024 edition)"

National Development and Reform Commission publicity! Polylactic acid heating composite fiber to be included in the "Green Technology Promotion Catalog (2024 edition)"

On November 27, the National Development and Reform Commission issued the "List of technologies to be included in the" Green Technology Promotion Catalog (2024 edition) ", and "a gel preparation process of heating fiber" was selected.

Technical name: A gel preparation process of heating fiber

Industry category: Resource recycling

Technology content: By using small molecule grafting chitosan to modify, a uniform and dense film layer is quickly formed on the fiber surface. At the same time, a hygroscopic film is formed on the fiber surface by gel method and impregnation method, and the heat preservation property of the fiber is improved by the principle of hygroscopic heating. The porous PLA fiber/modified chitosan aerogel composite network structure is used to achieve high voidage, high stability shape control, and maintain stable performance. The fiber can replace ES fiber and PET fiber, which are difficult to degrade, and solve the problem of poor heating and hygroscopic property.

Main technical parameters: the mass per unit area is 120g/㎡, the recovery rate is 99%, the compression rate is 73%; Thermal resistance 0.469m2·K/W; Moisture permeability 4510g/ (㎡·24h)

Application case: "Science and Technology Winter Olympics" winter sports clothing liner project. Construction scale: Annual output of 10,000 sets of polylactic acid fiber bionic velvet and winter sports clothing lining. Ecological benefits: The project can reduce 16,300 tons of carbon emissions per 10,000 tons of functional polylactic acid heating composite fiber compared with PET fiber, and the comprehensive utilization rate of resources can be increased by more than 5%.

The "Green Technology Promotion Catalogue (2024 edition)" is selected and published by the National Development and Reform Commission, the Ministry of Science and Technology, the Ministry of Industry and Information Technology, the Ministry of Natural Resources, the Ministry of Ecology and Environment, the Ministry of Housing and Urban-Rural Development, the State-owned Assets Supervision and Administration Commission of the State Council, and the National Energy Administration to promote green technology innovation and promotion in key industries. To provide strong technical support for the comprehensive green transformation of economic and social development.

For the green technologies included in the "Promotion Catalogue", the National Development and Reform Commission will work with relevant departments to organize technical roadshows and other activities in conjunction with the National Ecological Day, the National Energy Conservation Publicity Week, the National Low Carbon Day, and the Environment Day, and increase publicity and promotion efforts. All relevant departments, industry associations and central enterprises are encouraged to actively promote the popularization and application of green technologies in the "Promotion Catalogue". Give full play to the role of platforms such as the National Green Technology Trading Center, organize the promotion of green technology achievements such as "green technology service enterprises", and promote the transformation and industrialization of green technology achievements. For qualified projects that upgrade and transform green technologies in the "Promotion Catalogue", the central budget investment will be actively supported. Financial institutions are encouraged to strengthen financing support for green technologies in the Promotion Catalogue through green credit, green bonds, and carbon emission reduction support tools.